There is a suggestion too that fluctuations in the earth's temperatures
correlate well over a period of 200 years with sunspot activity. There
is a graph at :

http://www.arm.ac.uk/press/200years-on-the-Net.html

I like to think I can see the two lines converging during the final
years, thereby suggesting that something other than sunspot activity
has become a factor.

I am having a "discussion" with a particularly truculent denialist at
another site who refuses to believe that humanity has had any effect
whatsoever on global climate patterns. I despair sometimes!

On Dec 20, 12:20 am, "Michael Tobis" <[EMAIL PROTECTED]> wrote:
The more time series you look at the better the likelihood of a
correlation. If you look at twenty of them you are likely to hit a 95%
statistical significance. That's a long way from a theory.

Nobody has any suggestion, in this case, how magnetism affects climate
in pretty much exactly the way that CO2 is expected to (warmer
surface, colder stratosphere), nor any suggestion as to why CO2 should
be so kind as to fail to do so.

In any case one can easily examine temperature series on other planets
for a comparable temporal signature. If there were anything to this
we'd see the same thing on some of the solid planets or larger moons,
wouldn't we?

mt

On 12/19/06, mcbstrd <[EMAIL PROTECTED]> wrote:



> So this theroy that increased magnetic activity is responsible is
> unfounded?

>http://news.bbc.co.uk/2/hi/science/nature/358953.stm

> It seems to me at least to be internally plausible.


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